【例69.1】过滤多余的空格

状态	递交者	时间	内存	语言	代码	递交时间
AC	15359348852	23ms	512 KiB	C++14	175 Bytes	2026-1-3 13:46:53
AC	13927412866	27ms	756 KiB	C++14	347 Bytes	2026-1-1 15:23:10
AC	admin	27ms	412 KiB	C++14	262 Bytes	2023-7-9 20:35:17
AC	13911150279	27ms	764 KiB	C++14	188 Bytes	2024-12-6 21:41:33
AC	15359348852	27ms	760 KiB	C++14	175 Bytes	2026-1-4 19:23:23
AC	13803744281	31ms	412 KiB	C++14	217 Bytes	2023-7-9 20:50:13
AC	13810020827	32ms	516 KiB	C++14	193 Bytes	2023-12-24 19:02:42
AC	18722038772	338ms	4 MiB	Python 3	60 Bytes	2025-4-29 20:00:01